Thanks guys, last 2 posts are helpful
I will re- think that area before cutting it out now( the area that I have available is not quite enough for a 6in round to fit in the top)
This is why I'm trying to figure out what size rectangle to use because with the preheater ledge I ran out of space for the 6"stack, I could possibly come out the back and be much easier but I wasn't sure how that would draft or if it would work as good as coming out of the top?
The last two years I also had trouble with my 55 gallon barrel evaporator being vented out of the back and the stove pipe elbow actually broke loose in mid boil so that's why I'm trying to avoid coming out of the back on this build...
Hunt4 doing the math with your template of 2X12 is under the 6" stack square inches. as Super sapper said So increase it to 2-1/2 X 14" and your OK so maybe go to 18 X 3" and go with 8" stack and you will be fine. Stay away from the back the rig will look and perform better. out the top. Plus get some angle iron around the warming pan/mini pan opening.
Ok thanks fellas
Yep, I need to weld angle iron on preheater area
Cross support for evaporator pan
Cut opening in top for flue
Weld bolts to inside to attach 1" ceramic blanket
Brick inside
Get pans from WF that he's making for me
Cut stove door in
Get blower
Drill 2" emt that will provide AUF
Buy a 22 gauge rectangle to round boot
And finally extend my sugar shack 6' out to make more room for bigger rig!!!
It's alot but I've make good progress on new unit so far and I'm glad I asked about rectangular boot size for proper draft
Dang it Matt you remind me of the guy in front of me at the auto parts store.
Counter guy, Can I help you?
customer, My car won't start!
Counter guy, what do you need?
C Don't know!
CG, whats it doing?
C Nothing!
CG Does the engine turn over?
C No!
CG Is the battery dead?
C I don't think so!
CG what does it do when you try and turn it over?
C I don't know!
CG What do you mean you don't know what happens when you turn the key!
C I don't have the key because it's broken!
Now matt I'm just funning with ya. But after all the discussion you mentioned a blower and AUF
I've been asking so many questions in different threads on here I lost track and thought I had mentioned those 2 things in this thread earlier, so woops!
Does those 2 things being known now change the thoughts on rectangular opening size?
IMG_20180820_111643995_HDR.jpg
3.5"x 18" fue opening drawn out, there's no turning back now!
It equals 63 square inches( as close as I can get it to 8"x8" round pipe... Look right fellas?
Now before we all second the motion to allow you to continue with the build I have one request. Before you cut the opening get the angle iron sculpted to the round area. Looking god.
IMG_20180820_172753502.jpg
Not sure about sculpting angle iron, but here is start of my exhaust stack I worked on a bit today...
IMG_20180820_163834783.jpg
A different view as I welded it together...
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